Functional integrating device.



E. G. BAILEY. FUNCTIONAL INTEGRATING DEVICE.

APPLIOATION FILED JAN. 22, 1913.

1,0879 1 5... Patented Feb. 24, 1914.

-2 SHEETS-SHEET l.

6388 PS. fur/,6? 71,307

. 0, algae/2e E. G. BAILEY.

FUNCTIONAL INTEGRATING DEVICE.

APPLICATION FILED JAN. 22, 1913.

2 SHEETS-481115111 2.

' lhu erv or;

wp voeas ea Ev Tim nnvrN e. BAILEY, or NEWTON HIGHLANDS, MASSACHUSETTS.

' FUNCTIONAL INTEGRATING DEVICE.

madam.

To all whom it may concern lBe it'known that LERvIN G. BAILEY, a citizenof the United States, residing in Newton Highlands, in the county of Middlesex and State of ltliassachusetts, have invented an Improvement in Functional lntegrating Devices, of which the following description, in connection with the accompanying drawings, is a specification, like letters onthe drawings representing like parts.

The present invention relates to an integrating device by means of which the aver-' .planimeter or radii averaging instrument,

but as the rate of flow varies substantially" as the square rootof the pressure difference at any instant, it is impossible to ascertain the average rate of flow from the average pressure difference even though the chart may be graduated with unevenly. spaced graduations which read in quantity direct. Other insta-ncesare found in the case of rectangular, rt-notch, or other usual forms of weirs when the head or level of the liquid above the crest of the weir is recorded, and:

the average head is valueless as, an indication of the average quantity, since the quantity varies as the three-halves, five-halves, or

some other power of the head. Still another case is that of recording thermdmw eters that depend upon. pressure of some vapor such as sulfurdioxid, alcohol, etc, to produce a motion of the recorder pen, and the temperature is some other than a direct ratio function of the pressure so that the average temperature cannot be determined from these charts with any known type of averaging instrument. Many recording electrical meters have non-uniform graduations and the quantity desired therefore cannot be averagedin the usual manner, since it is not direct-1y proportional to the quantity recorded.

in order to determine the average of the quantity desired, from the record of a pen, the movement of which is caused by some function of said quantity which is not dil Specification of Letters Patent.

Application filed January 22, 1913. Serial No. 743,478.

Patented Feb. 2d, 1914...

rectly proportional thereto, the instrument embodying the invention is provided with a tracer, so arranged as to accommodate relative movements of the chart and tracer, one movement corresponding to the movement of the time element or original movement of the chart, and theother movement corresponding to the pen, record.

The elements thus far described are substantially the same as the elements of the radii averaging instrument shown and de scribed in United States Patent No. 927,338, granted to W. F. Durand; and the present invention consists in the combination with these elements of an integrating device whereby a result proportional to the averageof some function, or" the radii is indicated by the instrument.

To illustrate the invention, it have shown an integrating device which consists of two cooperating elements, one of which is subtable drum having a varying diameter along its axis, and the other a wheel in peripheral contact with said drum, the movement of either of these elements in line with the axis of both will vary the resultant rate of rotation of one or the other as the diameter of the drum varies at the point of contact during the movement. The auxiliary movable element of the integrating device is caused to be rotated by that relative movement of the chart and tracer which corresponds to the time element, and the result desired, from the record which has been traced on the chart during any period of time, will be indicated.

:lEigure l is a perspective view of an in strument embodying the invention in which the variable diameter element of the integrater is movable with the tracer; and Fig. 2 is a similar view of an instrument embodying the same principle in which. however, the variable diameter element is sta tionary with relation to the chart, and the other element movable with the tracer.

The instrument chosen to illustrate the invention is designed to indicate the average rate of flow of water through a triangular weir by the use of a chart which shows a pen record of the head throughout a given time, the rate of flow in this case varying substantially as the five-halves power of the head. i

Referring to Fig. 1, the instrument is supported upon a table 1 which also affords a support for the chart 2, the said table being provided with a post 3 which constitutes a centering device for the chart as well as means for holding one of the elements of the indicating device stationary with relation to the chart. For this purpose, the post, is shown as tubular and adapted to receive a spindle 4: which-is part of the instrument.

The said instrument is provided with a tracer 5 which is adapted to follow the pen recordof the chart when the chart and the instrument are moved one with relation to the other, and with a wheel 6 rotated by peripheral contact with the chart. The said wheel 6 constitutes the prime moverv of that element of the integrating device which is movable relative to the other element, the said integrating device, as a whole, being interposed between said wheel and a scale 7 and pointer 8.

In Fig. 1, the'wheel 6 is shown as supported in a frame provided at the opposite end with legs 9, the said wheel 6 resting on the surface of the chart 2, while the legs 9 rest on the table beyond the periphery of the chart. The frame is longitudinally mov able with relation to the spindle 4, so that as the chart is rotatedon the table, or the instrument rotated with relation to the chart, the entire frame can be moved back and forth so that the tracer will follow the which has bearings at opposite ends of the" frame, and which passes through an opening 13 in the spindle 4, so that the frame is positioned by said spindle, but free to be moved with the tracer 5 in following the chart record. In this construction, the drum 1O rotates with the wheel 6, and is moved longitudinally therewith as the tracer 5 follows the chart record. In this-case the scale 7, which, with the pointer 8, is substantially stationary with relation to the axis of the aduations on the'face of a wheel which is in peripheral contact with the drum 10. In the construction shown, the pointer 8 is secured to'an'enlarged portion 14 on a rod 15 which also constitutes an axle for the scale wheel, the enlarged portion forming a shoulder to position the wheel on the smaller portion of the axle. The said rod or axle 15 extends through a vertical slotted guide 16 connected with the frame and serving to position the wheel without preventing the vertical movement thereof which enables it to follow the periphery of I the drum 10. The axle or rod 15 is shown yoke 18 pivoted on the ends of a cross rod '19 which is supported on the spindle 4 to accommodate the vertical movement of the scale wheel.

In the operation of the device, when the chart 2 is turned'upon the post 3 as a center while the tracer 5 is being moved toward and fromfthe post to follow the pen record, the wheel 6 will be rotated causing a corresponding rotation of the drum 10 which, in turn, rotates the scale 7 with relation to the pointer 8. It is obvious that the rate of rotation' of the scale wheel 7 will varyin response to. its position relative to the'drum 10, while the position of the said drum 10 depends upon the position of the tracer on the chart. If, therefore, the drum 10 is so dcsignedthat its diameter at any position with relation to the chart is such as to produce a rotary movement of the scale 7 which varies as the five-halves power of the distance between the tracer 5 and the path on the chart which indicates zero, the average indicated by the scale and pointer will be directly proportional to the average rate of flow which is desired. If a strip or rectangular chart is to be averaged, it is obvious that the movement of the chart to correspond to its original time element movement must be rectilinear, so that the rate of rotation of the tracing wheel will not vary as its position varies on the chart. With this instrument, however the average either directly or indirectly proportional to the chart record can be'secured by properly designing the integrating device, the operation of which responds to the movement of the tracer over the record line which has been drawn on the chart. It is necessary in all cases that the tracing wheel should rotate throughout the entire movement which represents the time element, and since it is impracticable to reduce the resultant of this movement to zero, the integrating device is so arranged that a certain indication is shown when the tracing pointer is on zero line of the chart. The drum v1O is designed,

however, so that the zero indication may be regarded as a constant to be deducted from all readings. I

"It is obvious that the structural features of the invention are susceptible of wide modification without departingfrom the'invention, and I have shown one such modifi- I cation in Fig. 2.in which the scale 79, which is the equivalent of the scale 7, Fig. 1, is on the drum 100, which is the equivalent of the druh110, Fig. 1. In this'construction, the drum 100 is stationary with relation to contact with the wheel 60. -The remaining the chart, and is rotated by direct peripheral nosaert are clearly shown in the drawing, and apsponding to the increments of the chart record.

What I claim is: x l 1. An'integrating instrument for chart records comprising a tracer fdr the chart record, and a wheel adapted'to be rotated by a relative movement of the chart and,

- tracer; an indicator; and an integrating desecond rotary vice interposed between said wheel and said indicator, said integrating device consisting of a wheel and drum in peripheral contact with each other and longitudinally movable one with relation to the other, the longitudinal element vof the surface of said drum being a curved line. i i

2. An integrating device consisting of a relatively movable scale and pointer, one of which is operated by a rotary element; a element in peripheral contact with the rotar element first named, one of said elements eing of such sha e that the intersection of its working sur ace with a plane through its axis will be a curved line;

and means for moving one of said elements with relation to the other in conformity with the element of variable diameter and in the general direction of the axes of both.

3. An instrument comprising a tracer adapted to 'follow the record of a chart; a drum having varying diameters; a rotating element; an indicator operated by peripheral contact between the said drum and said rotating element; means for varying the relative positions of said drum and said rotating element in response to the movement of the tracer in following the pen record of the chart; and means for causing the rotation of said rotating element in response to a relative movement of the chart and tracer which corresponds to'the time element of the chart. t V

4. An averaging instrument having a tracing pointer and a wheel adapted to be rotated by its peripheral engagement with the chart; a drum:rotatably connected with said Wheel and being movable therewith in a direction parallel to its own axis, said drum scale and pomter longitudinally stationary with relation to said drum, one of said parts consisting of a wheel or disk operated by 'peripheral engagement with said drum. r

In testimony whereof, have signed my name to this specification 1n the presence of two subscribing witnesses.

EnvrN o. BAILEY.

. Witnesses:

JAs. J. MALONEY, W; E. Coventr having a varying diameter, and a v 

